示例#1
0
static int pvr2_ioread_start(struct pvr2_ioread *cp)
{
	int stat;
	struct pvr2_buffer *bp;
	if (cp->enabled) return 0;
	if (!(cp->stream)) return 0;
	pvr2_trace(PVR2_TRACE_START_STOP,
		   "/*---TRACE_READ---*/ pvr2_ioread_start id=%p",cp);
	while ((bp = pvr2_stream_get_idle_buffer(cp->stream)) != NULL) {
		stat = pvr2_buffer_queue(bp);
		if (stat < 0) {
			pvr2_trace(PVR2_TRACE_DATA_FLOW,
				   "/*---TRACE_READ---*/ pvr2_ioread_start id=%p error=%d",
				   cp,stat);
			pvr2_ioread_stop(cp);
			return stat;
		}
	}
	cp->enabled = !0;
	cp->c_buf = NULL;
	cp->c_data_ptr = NULL;
	cp->c_data_len = 0;
	cp->c_data_offs = 0;
	cp->stream_running = 0;
	if (cp->sync_key_len) {
		pvr2_trace(PVR2_TRACE_DATA_FLOW,
			   "/*---TRACE_READ---*/ sync_state <== 1");
		cp->sync_state = 1;
		cp->sync_trashed_count = 0;
		cp->sync_buf_offs = 0;
	}
	cp->spigot_open = 0;
	return 0;
}
示例#2
0
static int pvr2_dvb_stream_do_start(struct pvr2_dvb_adapter *adap)
{
	struct pvr2_context *pvr = adap->channel.mc_head;
	unsigned int idx;
	int ret;
	struct pvr2_buffer *bp;
	struct pvr2_stream *stream = NULL;

	if (adap->stream_run) return -EIO;

	ret = pvr2_channel_claim_stream(&adap->channel, &pvr->video_stream);
	/*                                      */
	if (ret < 0) return ret;

	stream = adap->channel.stream->stream;

	for (idx = 0; idx < PVR2_DVB_BUFFER_COUNT; idx++) {
		adap->buffer_storage[idx] = kmalloc(PVR2_DVB_BUFFER_SIZE,
						    GFP_KERNEL);
		if (!(adap->buffer_storage[idx])) return -ENOMEM;
	}

	pvr2_stream_set_callback(pvr->video_stream.stream,
				 (pvr2_stream_callback) pvr2_dvb_notify, adap);

	ret = pvr2_stream_set_buffer_count(stream, PVR2_DVB_BUFFER_COUNT);
	if (ret < 0) return ret;

	for (idx = 0; idx < PVR2_DVB_BUFFER_COUNT; idx++) {
		bp = pvr2_stream_get_buffer(stream, idx);
		pvr2_buffer_set_buffer(bp,
				       adap->buffer_storage[idx],
				       PVR2_DVB_BUFFER_SIZE);
	}

	ret = pvr2_hdw_set_streaming(adap->channel.hdw, 1);
	if (ret < 0) return ret;

	while ((bp = pvr2_stream_get_idle_buffer(stream)) != NULL) {
		ret = pvr2_buffer_queue(bp);
		if (ret < 0) return ret;
	}

	adap->thread = kthread_run(pvr2_dvb_feed_thread, adap, "pvrusb2-dvb");

	if (IS_ERR(adap->thread)) {
		ret = PTR_ERR(adap->thread);
		adap->thread = NULL;
		return ret;
	}

	adap->stream_run = !0;

	return 0;
}